Magnetic brush for cleaning talking-machine records



Patented Mar. 28, 1922.

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APPLICATION FILED APR. 9| I92I ln/zfemi'or':

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CLARENCE E. DUCLOS, OF ST. LOUIS, MISSOURI.

MAGNETIC BRUSH FOR CLEANING TALKING-MACHINE RECORDS.

Application filed April 9,

To all whom it may concern:

Be it known that I, CLARENCE E. DUCLOS, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improve ments in Magnetic Brushes for Cleaning Talking-Machine Records, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings,

forming a part hereof.

-My invention consists in the novel disclosure hereinafter particularly described and distinctly claimed.

The object of my invention is to provide an improved brush and method of procedure, for removing the particles of dust and metallic needles from the disk-records and motor-boards of cabinet talking-mz'ichines and phonographs.

Heretofore, it has been diiiicult, and almost impossible to remove fine metallic particles of needles from the record grooves, and they have remained therein, and have injured the grooves and new needles, and have also damaged the record, making it scratch and grate when in use; likewise, it has also been difficult to pick up and remove metallic needles which have been scattered over the motor-board, and lodged in corners and cracks of the cabinet, and the highly expensive finish of the latter has been scratched and damaged by such needles, in removing them with the fingers or with another needle or other instrument.

In the drawin s,

Fig. 1 is a si e-elevation of the simplest form of my improved magnetic-brush.

Fig. 2 is a bottom plan-view of the same, with the tufted brush material detached and turned back, at one end of the brush, to show the location and arrangement of the permanent magnet, and

Fig. 3 is a diagrammatic view of the electrical construction and connections, when an electro magnet is to be used in the brush.

The numeral 1 designates the body of a brush-back, which may be of any desired form or size suitable for the purpose, and it may serve as the base for any ornamental fixture that is portable, and adapted to be used upon the motor-board of a cabinet talk- Specification of Letters Patent.

Patented Mar. 28, 1922.

1921. Serial No. 459,962.

ing-machine or phonograph; as, for instance, a portable lamp whose standard 2 would have its lower end mounted upon and fixed to the said brush-back body 1, as shown in Fig. 1.

In that case, the said lamp-standard 2 could be used as a handle for the brush.

lVhen no standard is used, the body 1 is provided with the usual finger-grooves 3 in its opposite edges, so that the brush may be firmly grasped between the fingers and thumb of the operators hand.

Set in, and concealed by, the body 1 and the tufted brush-material 4, is a magnet 5, which may be of the common horse-shoe type, or a straight bar magnet, as indicated by the dotted lines in Fig. 2.

Or the magnet may be of the form shown in Fig. 3, wherein a soft iron flat core 5 is encircled by a coil 7 of common covered wire, and set in the body of the brush, so that the flexible conductors 8 may allow the free movements of the brush.

Said conductors 8 would be connected, of course, to some convenient source of electricity, such as to a battery 9, or to the electric-light system of the house, and a suitable switch 10 would control the passage of electricity to the said coil 7 of the brush.

In whatever form of magnet made use of, the poles of same should be set in recesses 11 formed in the said brush-back 1 so that said poles will be located as close as possible to the end or edge of the brush, in order that the magnetism of said magnet may operate with the greatest efliciency upon the metallic needles or particles to be picked up.

The operation of my invention will be readily understood without further description.

However, it may be stated that when one or both magnetized ends of the brush are brought over or near to any metallic particle or stray needle, all such things will be picked up, and will adhere to the brush until removed therefrom.

I claim z A brush for cleaning talking-machine records and other parts of talking-machines or phonographs, composed of a brush-back, a magnet carried by said brush-back, and brush-material on the bottom of said brushback said ma net bein arotected and con- In testimon whereof, I have si ned n1 cealed on lts top by smd brush-back, and name to thls speclficatlon 1n presence of two protected on Its bottom by sald. brushmatesubscrlblng wltnesses.

rial, to prevent said magnet from scratch- CLARENCE DUCLOS. ing the records 01: the motor-boards of cabl- VltILGSSGSI net talklng-machlnes 0r phonographs, sub- JOHN G HIGDON,

stantially as and for the purpose set forth. HENRY LLT'iIGDON. 

